Fix exceptions on Windows XP when IPv6 is disabled (Thanks paolo zambotti)

src/properties/peerlistwidget.cpp

@@ -288,13 +288,15 @@ void PeerListWidget::saveSettings() const {
 
 void PeerListWidget::loadPeers(const QTorrentHandle &h, bool force_hostname_resolution) {
   if(!h.is_valid()) return;
+  boost::system::error_code ec;
   std::vector<peer_info> peers;
   h.get_peer_info(peers);
   std::vector<peer_info>::iterator itr;
   QSet<QString> old_peers_set = peerItems.keys().toSet();
   for(itr = peers.begin(); itr != peers.end(); itr++) {
     peer_info peer = *itr;
-    QString peer_ip = misc::toQString(peer.ip.address().to_string());
+    QString peer_ip = misc::toQString(peer.ip.address().to_string(ec));
+    if(ec) continue;
     if(peerItems.contains(peer_ip)) {
       // Update existing peer
       updatePeer(peer_ip, peer);

src/qtlibtorrent/qbtsession.cpp

@@ -2505,12 +2505,20 @@ void QBtSession::readAlerts() {
       //emit UPnPSuccess(QString(p->msg().c_str()));
     }
     else if (peer_blocked_alert* p = dynamic_cast<peer_blocked_alert*>(a.get())) {
-      addPeerBanMessage(QString(p->ip.to_string().c_str()), true);
-      //emit peerBlocked(QString::fromUtf8(p->ip.to_string().c_str()));
+      boost::system::error_code ec;
+      string ip = p->ip.to_string(ec);
+      if (!ec) {
+        addPeerBanMessage(QString::fromAscii(ip.c_str()), true);
+        //emit peerBlocked(QString::fromAscii(ip.c_str()));
+      }
     }
     else if (peer_ban_alert* p = dynamic_cast<peer_ban_alert*>(a.get())) {
-      addPeerBanMessage(QString(p->ip.address().to_string().c_str()), false);
-      //emit peerBlocked(QString::fromUtf8(p->ip.to_string().c_str()));
+      boost::system::error_code ec;
+      string ip = p->ip.address().to_string(ec);
+      if (!ec) {
+        addPeerBanMessage(QString::fromAscii(ip.c_str()), false);
+        //emit peerBlocked(QString::fromAscii(ip.c_str()));
+      }
     }
     else if (fastresume_rejected_alert* p = dynamic_cast<fastresume_rejected_alert*>(a.get())) {
       QTorrentHandle h(p->handle);
@@ -2538,7 +2546,8 @@ void QBtSession::readAlerts() {
       //emit urlSeedProblem(QString::fromUtf8(p->url.c_str()), QString::fromUtf8(p->msg().c_str()));
     }
     else if (listen_succeeded_alert *p = dynamic_cast<listen_succeeded_alert*>(a.get())) {
-      qDebug() << "Sucessfully listening on" << p->endpoint.address().to_string().c_str() << "/" << p->endpoint.port();
+      boost::system::error_code ec;
+      qDebug() << "Sucessfully listening on" << p->endpoint.address().to_string(ec).c_str() << "/" << p->endpoint.port();
       // Force reannounce on all torrents because some trackers blacklist some ports
       std::vector<torrent_handle> torrents = s->get_torrents();
       std::vector<torrent_handle>::iterator it;

src/reverseresolution.h

@@ -60,7 +60,9 @@ public:
   }
 
   QString getHostFromCache(const libtorrent::asio::ip::tcp::endpoint &ip) {
-    const QString ip_str = misc::toQString(ip.address().to_string());
+    boost::system::error_code ec;
+    const QString ip_str = misc::toQString(ip.address().to_string(ec));
+    if (ec) return QString();
     QString ret;
     if(m_cache.contains(ip_str)) {
       qDebug("Got host name from cache");
@@ -72,7 +74,9 @@ public:
   }
 
   void resolve(const libtorrent::asio::ip::tcp::endpoint &ip) {
-    const QString ip_str = misc::toQString(ip.address().to_string());
+    boost::system::error_code ec;
+    const QString ip_str = misc::toQString(ip.address().to_string(ec));
+    if (ec) return;
     if(m_cache.contains(ip_str)) {
       qDebug("Resolved host name using cache");
       emit ip_resolved(ip_str, *m_cache.object(ip_str));